custom field data not surviving database upgrade

Dear Sandra/Ross,

I have recently upgraded my database from v21.0.0 to v21.0.01 and I lost all my custom field data.
Is there any trick to prevent this?

Thank You

Hi rthunoli,

There is a migration process for v21 that converted the custom field data when performing the update, so theoretically this shouldn’t have caused any missing data. I wonder if the missing data is related to your import issue. If the import failed then it would have inadvertently overwritten the data. Do you have any backups you can restore it from? Ideally, taking a backup before any updates is a good practice.